Minibikes
2007Derbi Dirt Boy
20 fields on record
The 2007 Derbi Dirt Boy is a compact 50cc minibike designed for young riders and beginners seeking off-road thrills. Its lightweight frame and simple kick-start single-cylinder engine deliver accessible performance for dirt biking fundamentals. Known for affordable entry-level fun, it combines basic reliability with the rugged character needed for trail riding.
- Capacity
- 49.9 ccm
- Engine
- Single single, four-stroke
- Gearbox
- 1-speed
- Dry weight
- Not on record
Know it? Add it → - Seat height
- Not on record
Know it? Add it → - Power
- 4.6 HP
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Designed purely for casual backyard and off-road fun rather than any serious performance or commuting use.
- Built for
- A playful, low-stakes machine that rewards curiosity and casual messing about rather than any kind of speed thrill.
- Not ideal for
- This is not for adult riders seeking real off-road capability, highway use, or any kind of touring or passenger carrying.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Engine
- Capacity
- 49.9 ccm
- Power
- 4.6 HP
- Engine type
- Single single, four-stroke
- Bore x stroke
- 39.0 x 41.0 mm
- Compression
- 12.0:1
- Cooling system
- Air
- Starting
- Kick
- Ignition
- CDI
- Lubrication system
- Oil pump
Transmission
- Gearbox
- 1-speed
- Transmission type
- Manual
Dimensions & weight
- Wheelbase
- 905 mm
- Overall length
- 1290 mm
- Overall width
- 590 mm
- Fuel capacity
- 2.30 litres
Brakes & wheels
- Front brakes
- Single disc
- Front brakes diameter
- 160 mm
- Rear brakes
- Expanding brake (drum brake)
Other
- Color options
- White
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
Rider Reviews
Common questions
What is the engine size of the Derbi Dirt Boy?
The 2007 Derbi Dirt Boy has a Capacity of 49.9 ccm (3.05 cubic inches).
What engine power does the Derbi Dirt Boy have?
The 2007 Derbi Dirt Boy has a Power of 4.6 HP.
How many gears does the Derbi Dirt Boy have?
The 2007 Derbi Dirt Boy has a Gearbox of 1-speed.
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